Datasheet

N2HET Control Registers

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23.4.32 Loop Back Pair Direction Register (HETLBPDIR)

Refer to Section 23.2.5.7 for a description of loopback test functions.

N2HET1: offset = FFF7 B890h; N2HET2: offset = FFF7 B990h

Figure 23-66. Loop Back Pair Direction Register (HETLBPDIR)

31 20 19 16

Reserved LBPTSTENA

R-0 R/WP-5h

15 14 13 12 11 10 9 8

LBPDIR 31/30 LBPDIR 29/28 LBPDIR 27/26 LBPDIR 25/24 LBPDIR 23/22 LBPDIR 21/20 LBPDIR 19/18 LBPDIR 17/16

R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0

7 6 5 4 3 2 1 0

LBPDIR 15/14 LBPDIR 13/12 LBPDIR 11/10 LBPDIR 9/8 LBPDIR 7/6 LBPDIR 5/4 LBPDIR 3/2 LBPDIR 1/0

R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0

LEGEND: R/W = Read/Write; R = Read only; WP = Write in privileged mode only; -n = value after reset

Table 23-47. Loop Back Pair Direction Register (HETLBPDIR) Field Descriptions

Bit Field Value Description

31-20 Reserved 0 Read returns 0. Writes have no effect.

19-16 LBPTSTENA Loopback Test Enable Key

5h Loopback Test is disabled.

Ah Loopback Test is enabled.

Others Loopback Test is disabled

15-0 LBPDIR Loop Back Pair Direction Bits

n+1 / n

0 The HR structures on pins HET[n+1] and HET[n] are internally connected with HET[n] as input and

HET[n+1] as output.

1 The HR structures on pins HET[n+1] and HET[n] connected with HET[n] as output and HET[n+1]

as input.

NOTE: The loop back direction can be selected independent on the HETDIR register setting.

992

High-End Timer (N2HET) Module SPNU562–May 2014

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